Table 1. Demographic characteristics of the participants and eyes analysed in the study.
| Race (n) | Caucasian (100%) |
|---|---|
| Number of eyes involved in statistical analysis (n) | 286 (100%) |
| Male/Female (n/n) | 126/160 |
| Best-corrected visual acuity (mean±SD) | 0.9±0.2 |
| Refractive error (D) (mean±SD, range) | −0.7±2.9 (−14.00+8.00) |
| Prevalence of healthy eyes | 93/286 (32.5%) |
| Prevalence of OHT eyes | 36/286 (12.6%) |
| Prevalence of glaucoma eyes | 157/286 (54.9%) |
| Preperimetric | 46/157 (29.3%) |
| Perimetric | 111/157 (70.7%) |
| Type of glaucoma | |
| Primary open-angle glaucoma | 103/157 (65.6%) |
| Juvenile open-angle glaucoma | 11/157 (7.0%) |
| Normal-pressure glaucoma | 12/157 (7.6%) |
| Chronic angle closure glaucoma | 11/157 (7.0%) |
| Pseudoexfoliative glaucoma | 7/157 (4.5%) |
| Pigment glaucoma | 9/157 (5.7%) |
| Other secondary glaucomas | 3/157 (1.9%) |
| Congenital glaucoma | 1/157 (0.6%) |
| Mean defect (dB) (mean±SD) | |
| - Healthy eyes | 0.3±1.4 |
| - OHT eyes | −0.1±1.2 |
| - Preperimetric glaucoma eyes | 0.1±1.8 |
| - Perimetric glaucoma eyes | 9.8±7.8 |
| Distribution of disease severity in the perimetric glaucoma groupa | |
| Stage 1 | 26/111 (23.4%) |
| Stage 2 | 34/111 (30.6%) |
| Stage 3 | 21/111 (18.9%) |
| Stage 4 | 24/111 (21.6%) |
| Stage 5 | 6/111 (5.4%) |
| Age (years) (mean±SD) | |
| Healthy eyes | 54.9±15.9 |
| OHT eyes | 51.5±16.5 |
| Preperimetric glaucoma eyes | 57.6±11.8 |
| Perimetric glaucoma eyes | 62.2±14.7 |
| Untreated maximal IOP of the OHT eyes (mm Hg) (mean±SD) | 29.1±8.7 |
Abbreviations: OHT, ocular hypertension; IOP, intraocular pressure.
a
Classified according to the Modified Bascom Palmer glaucoma staging system.23